Dynamic Characteristics Analysis of 3D Blade Tip Clearance for Turbine Blades with Typical Cracks
As well known, the crack is a typical fault of turbine blades, which is difficult to detect due to the weak fault features contained in the rotor vibration. Although some fault diagnosis methods based on blade tip timing (BTT) are proposed to detect blade cracks, the limited fault features can be ex...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/9024739 |
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| author | Xiaodong Zhang Yiwei Xiong Xin Huang Bochao Fan Zhen Zhao Jiahao Zhu |
| author_facet | Xiaodong Zhang Yiwei Xiong Xin Huang Bochao Fan Zhen Zhao Jiahao Zhu |
| author_sort | Xiaodong Zhang |
| collection | DOAJ |
| description | As well known, the crack is a typical fault of turbine blades, which is difficult to detect due to the weak fault features contained in the rotor vibration. Although some fault diagnosis methods based on blade tip timing (BTT) are proposed to detect blade cracks, the limited fault features can be extracted because the BTT signals contain only one-dimensional fault information. Based on the dynamic analysis, the cracked blade undergoes three-dimensional (3D) deformation so that it would be reflected in the changes of the three-dimensional blade tip clearance (3D-BTC). Therefore, the dynamic characteristics of the 3D-BTC of turbine blades with typical cracks should be investigated to obtain its change rule and achieve a more comprehensive diagnosis of blade cracks. In this paper, the 3D finite element model of the turbine blisk is established, and the fluid-thermal-solid coupling analysis is implemented to calculate the blade deformation. Then, a novel dynamic computation method is proposed to calculate the 3D-BTC based on the blade deformation. The typical blade cracks are taken into consideration, and the dynamic characteristics of the 3D-BTC regarding the typical cracks are analyzed to obtain its change rule. The results show that abundant crack fault information can be obtained based on the 3D-BTC, which can facilitate the comprehensive diagnosis of turbine blade cracks. |
| format | Article |
| id | doaj-art-7bd7dfde0bc54373b26952a738e8f511 |
| institution | Kabale University |
| issn | 1687-5974 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-7bd7dfde0bc54373b26952a738e8f5112025-02-03T01:22:49ZengWileyInternational Journal of Aerospace Engineering1687-59742022-01-01202210.1155/2022/9024739Dynamic Characteristics Analysis of 3D Blade Tip Clearance for Turbine Blades with Typical CracksXiaodong Zhang0Yiwei Xiong1Xin Huang2Bochao Fan3Zhen Zhao4Jiahao Zhu5School of Mechanical EngineeringSchool of Mechanical EngineeringSchool of Mechanical EngineeringSchool of Mechanical EngineeringSchool of Mechanical EngineeringSchool of Mechanical EngineeringAs well known, the crack is a typical fault of turbine blades, which is difficult to detect due to the weak fault features contained in the rotor vibration. Although some fault diagnosis methods based on blade tip timing (BTT) are proposed to detect blade cracks, the limited fault features can be extracted because the BTT signals contain only one-dimensional fault information. Based on the dynamic analysis, the cracked blade undergoes three-dimensional (3D) deformation so that it would be reflected in the changes of the three-dimensional blade tip clearance (3D-BTC). Therefore, the dynamic characteristics of the 3D-BTC of turbine blades with typical cracks should be investigated to obtain its change rule and achieve a more comprehensive diagnosis of blade cracks. In this paper, the 3D finite element model of the turbine blisk is established, and the fluid-thermal-solid coupling analysis is implemented to calculate the blade deformation. Then, a novel dynamic computation method is proposed to calculate the 3D-BTC based on the blade deformation. The typical blade cracks are taken into consideration, and the dynamic characteristics of the 3D-BTC regarding the typical cracks are analyzed to obtain its change rule. The results show that abundant crack fault information can be obtained based on the 3D-BTC, which can facilitate the comprehensive diagnosis of turbine blade cracks.http://dx.doi.org/10.1155/2022/9024739 |
| spellingShingle | Xiaodong Zhang Yiwei Xiong Xin Huang Bochao Fan Zhen Zhao Jiahao Zhu Dynamic Characteristics Analysis of 3D Blade Tip Clearance for Turbine Blades with Typical Cracks International Journal of Aerospace Engineering |
| title | Dynamic Characteristics Analysis of 3D Blade Tip Clearance for Turbine Blades with Typical Cracks |
| title_full | Dynamic Characteristics Analysis of 3D Blade Tip Clearance for Turbine Blades with Typical Cracks |
| title_fullStr | Dynamic Characteristics Analysis of 3D Blade Tip Clearance for Turbine Blades with Typical Cracks |
| title_full_unstemmed | Dynamic Characteristics Analysis of 3D Blade Tip Clearance for Turbine Blades with Typical Cracks |
| title_short | Dynamic Characteristics Analysis of 3D Blade Tip Clearance for Turbine Blades with Typical Cracks |
| title_sort | dynamic characteristics analysis of 3d blade tip clearance for turbine blades with typical cracks |
| url | http://dx.doi.org/10.1155/2022/9024739 |
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